@article{MZM_2006_79_4_a5,
     author = {M. V. Zaicev and S. P. Mishchenko},
     title = {Colength of varieties of linear algebras},
     journal = {Matemati\v{c}eskie zametki},
     pages = {553--559},
     publisher = {mathdoc},
     volume = {79},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2006_79_4_a5/}
}